1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** ThreadX Component */
16 /** */
17 /** Semaphore */
18 /** */
19 /**************************************************************************/
20 /**************************************************************************/
21
22 #define TX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "tx_api.h"
28 #include "tx_semaphore.h"
29
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _txe_semaphore_info_get PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* William E. Lamie, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function checks for errors in the semaphore information get */
44 /* service. */
45 /* */
46 /* INPUT */
47 /* */
48 /* semaphore_ptr Pointer to semaphore control block*/
49 /* name Destination for the semaphore name*/
50 /* current_value Destination for current value of */
51 /* the semaphore */
52 /* first_suspended Destination for pointer of first */
53 /* thread suspended on semaphore */
54 /* suspended_count Destination for suspended count */
55 /* next_semaphore Destination for pointer to next */
56 /* semaphore on the created list */
57 /* */
58 /* OUTPUT */
59 /* */
60 /* TX_SEMAPHORE_ERROR Invalid semaphore pointer */
61 /* status Completion status */
62 /* */
63 /* CALLS */
64 /* */
65 /* _tx_semaphore_info_get Actual semaphore info get service */
66 /* */
67 /* CALLED BY */
68 /* */
69 /* Application Code */
70 /* */
71 /* RELEASE HISTORY */
72 /* */
73 /* DATE NAME DESCRIPTION */
74 /* */
75 /* 05-19-2020 William E. Lamie Initial Version 6.0 */
76 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
77 /* resulting in version 6.1 */
78 /* */
79 /**************************************************************************/
_txe_semaphore_info_get(TX_SEMAPHORE * semaphore_ptr,CHAR ** name,ULONG * current_value,TX_THREAD ** first_suspended,ULONG * suspended_count,TX_SEMAPHORE ** next_semaphore)80 UINT _txe_semaphore_info_get(TX_SEMAPHORE *semaphore_ptr, CHAR **name, ULONG *current_value,
81 TX_THREAD **first_suspended, ULONG *suspended_count,
82 TX_SEMAPHORE **next_semaphore)
83 {
84
85 UINT status;
86
87
88 /* Check for an invalid semaphore pointer. */
89 if (semaphore_ptr == TX_NULL)
90 {
91
92 /* Semaphore pointer is invalid, return appropriate error code. */
93 status = TX_SEMAPHORE_ERROR;
94 }
95
96 /* Now check for a valid semaphore ID. */
97 else if (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)
98 {
99
100 /* Semaphore pointer is invalid, return appropriate error code. */
101 status = TX_SEMAPHORE_ERROR;
102 }
103 else
104 {
105
106 /* Otherwise, call the actual semaphore information get service. */
107 status = _tx_semaphore_info_get(semaphore_ptr, name, current_value, first_suspended,
108 suspended_count, next_semaphore);
109 }
110
111 /* Return completion status. */
112 return(status);
113 }
114
115
